Harrow.



a I I designed forharrowing freshly plpw'ed' up nus'rae n, SOIININEN, orBROOKLYN. NEW Yonn'Assienon or ONE-THIRD TO I MATHlA EDWARD JUOPPERI, FBROOKLYN, NEW YORK.

HAanow resales.

Application filed Februa ry 3, 1917. SeriallNo. 146,379.

in the county of Kings and State of New York, have invented'a new andImproved- Harrow, of which the following is; a full,

sod or prairie soil and for harrowing the ground for a second cropwithout first re,-

sorting to plowing, and arranged to insure. a thorough preparationofthe-soil to any desired depth with a view of producing a bed ready forreceiving seed and irrespec- I jtive of whether the soil is hard' orsoft. -wet or dry.

border to accomplish the desired result, use is made of a wheeled frameadapted to be drawn over the field, and transverse rolltending radiallyand having their width in the direction of'the movement of the h'arrow,the other roller being provided with spirally arranged sickle orclaw-shaped cutting blades alternating the blades of the'first roller. iI I I A practical embodiment-of the invention is represented in theaccompanyingdrawings forming a part of this specification, in whichsimilar characters of reference indi} cate corresponding parts in allthe views.

Figure 1 is a plan viewofthe'haflow with part of the guard broken out;

' Fig. 2 is a sectional side elevation ofthe same, on the line 22' ofFig. 1;

I Fig. 3 isan enlarged transverse section of the mechanism for raisingandjlowering the frame and its. rollers, the section being on theline3-3 of Fig.2; I I

Fig. 4 is a perspective view of one. of the straight cutting blades; and

' Fig. 5 is a similar view of one of the claw shaped cutting blades.

The frame ,10 of the harrow is: preferably of rectangular shape and isprovided at its front end -with-the'usual drivihg means 11' forconnection with a team or other means used for drawing the barrow overthe field. The rear end of the frame 10 1s provlded with a suitable seat12 for accoodating wheel l6. ratchet wheel 20 engagedby a pawl 21fulcrumed on the corresponding guideway 13 'to hold the shaft 18 againstreturn move- 'ment after the desired adjustment has been ranged: in

the driverofthe harrow. -The1sides'of the frame 10 are provided near"'the front and rear with vertically disposed gu-ideways 13 ing stubaxles 15 on which are journaled -'wheels 16 adapted to travel over theground, Each ofth'e ra'cks lat is in mesh with a pinion 17 secured onthe shaft 10 'journaled in suitable bearings arranged on the corresponding guideways 13, and the inner endofthe-shaft 18 is preferably'made polygo- ,nal for the application of a wrench' or other in whichare mounted to slide up and down racks 14 provided, with o'u twardlyextend-J tool 19 to permit of conveniently turningthe.

shaft 18 and consequently the pinion 17'to raise or to lowerthe rack 14'and'withit the On the shaft 18 is secured a made. ersfljournaled in thesaid frame one behind a the other, and of which one is. provided withspirally arranged fiat cutting blades eX-.

I "On the fram'e 10 are journaled transverse rollers v25 and 26 arrangedonebehind the other and repeated in alternate relation as many. times'as desired. Preferably, how ever, four such rollers are used,as-shownin the drawi'ngs.- Each of the rollers '25 is ting blades 27 ofunifo'rmlength and disposed radially, .withth'e width of the bladesextending'in the direction of the travel. of;

the harrow.

- The blades 27 are spaced-equal. distances apart in each spiral but thecorresponding posed'in the same :planes spacedequal' distances apart, aswill be readily understood blades of the several spiral rows aredisbyr'reference to Fig. 1. By the arrangement described, a large numberof blades 27 can be accommodated on the roller 25.

The roller .26 is provided with blades'28 ars ir'al rows on'the rollerand made h de-shaped and of uniform lengthclaw or sic v I to correspondto the length of the. blades 27 so that both sets of blades 27 and 28out into the soil to the same depth, and-the latter' is,

varied by .the adjustment of the; wheels 16 according to the nature ofthe soil harrow'ed atthe time. Each of the blades 28 termirelation asthe cutting blades 27 are on the roller 25, but the blades 28 alternatewith the blades 27 as will be readily understood by reference to Fig. 1.It will be noticed that the blades 27 clear the roller 26 and the blades28 clear the roller 25, thus accommodating a large number of rollers andcutting blades in a comparatively small space.

When the harrow is drawn over the field the blades 27 and 28 cut intothe ground to a predetermined depth, that is, according to the positionof the wheels 16 on'the frame 10. As the roller advances each cuttingblade 27 and 28 cuts a-long slit into the soil and as the cutting blades27 and 28 are closely spaced in a transverse direction it is evidentthat the soil is cut up into very small pieces thus providing a properbed for receiving the seed. The pointed sickle or claw-shaped cuttingblades 28 in addition to cutting the soil dig into the latter and loosenit, and as the cutting blades 28 follow the cutting blades 27, it isevident that the soil is thoroughly loosenedas it is already out by theblades 27. In practice, the soil is cut practically into inch pieces.

It is understood that the harrow shown and described is more especiallydesigned for harrowing plowed up prairie soil or sod or soil from whichthe first crop has been harvested without requiring a plowingpreparatory to seeding for a second crop but in each case the sod orsoil is cut up sufficiently fine for receiving the seed.

I'Vhen it is desired to move the harrow from one place to another, theframe 10 is clear the ground thus avoiding injury to the said blades.

In order to prevent injury to the attendant the frame 10 is provided ontop with a skeleton guard 4 0 extending over the rollers and theircutting blades.

Having thus described my invention, I claim as new and desire to secureby Letters Patent I 1. In a harrow, a wheeled frameadapted to be drawnover the field, and transverse rollers journaled in the said frame onebehind the other in pairs and of which pairs one is provided withspirally arranged flat cutting blades extending radially and havingtheir width. in the direction of the movement of the harrow, the otherroller of the pair being provided with spirally arranged sickle-shapedcutting blades alternating with the blades of the first roller of suchpair.

2. In a harrow, awheeled frame adapted to be drawn over the field, andtransverse rollers journaled in pairs in the said frame one rollerbehind the other and of which one is provided with spirally arrangedstraight flat cutting blades having rounded outer ends and extendingradially and having their width in the direction of the movement of theharrow, the other roller of'the pair being provided with spirallyarranged sickle-shaped cutting blades alternating with .the blades ofthe first roller, each of the said sickle-shaped blades terminating'in apoint and having front and rear cutting edges and overlapping thestraight blades of the adjacent roller in close relation.

KUSTAA E. SOININEN.

